Recommended Related to Atrial Fibrillation

Most episodes of atrial fibrillation aren't life-threatening, but an irregular heartbeat can cause complications like a heart attack or stroke. When you're prepared to spot and handle what's going on, you can help your loved one get the medical care he needs faster, and ease your worries, too.
To get started, make a list of his health conditions and the medications he takes. That way, you can share the list with medical professionals during any emergency. If your loved one takes blood thinners,...

The quivering upsets the normal rhythm between the atria and the
lower parts of the heart, the ventricles. And the ventricles may beat fast and without a regular rhythm.

This is dangerous
because if the heartbeat isn't strong and steady, blood can
collect, or pool, in the atria. And pooled blood is more likely to form clots. Clots can travel to the brain, block blood flow, and cause a stroke.